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/linux-6.12.1/Documentation/timers/
Dhighres.rst2 High resolution timers and dynamic ticks design notes
8 https://www.kernel.org/doc/ols/2006/ols2006v1-pages-333-346.pdf
11 http://www.cs.columbia.edu/~nahum/w6998/papers/ols2006-hrtimers-slides.pdf
23 - hrtimer base infrastructure
24 - timeofday and clock source management
25 - clock event management
26 - high resolution timer functionality
27 - dynamic ticks
31 ---------------------------
40 - time ordered enqueueing into a rb-tree
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/linux-6.12.1/Documentation/driver-api/i3c/
Dprotocol.rst1 .. SPDX-License-Identifier: GPL-2.0
17 https://resources.mipi.org/mipi-i3c-v1-download).
22 The I3C (pronounced 'eye-three-see') is a MIPI standardized protocol designed
25 while remaining power-efficient.
42 I3C is a multi-master protocol, so there might be several masters on a bus,
46 Each device on the I3C bus has to be assigned a dynamic address to be able to
51 In addition to these per-device addresses, the protocol defines a broadcast
54 Once a dynamic address has been assigned to a device, this address will be used
56 assigned a dynamic address, the device should still process broadcast messages.
65 The discovery mechanism is called DAA (Dynamic Address Assignment), because it
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/linux-6.12.1/Documentation/devicetree/bindings/i3c/
Di3c.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Alexandre Belloni <alexandre.belloni@bootlin.com>
11 - Miquel Raynal <miquel.raynal@bootlin.com>
20 pattern: "^i3c@[0-9a-f]+$"
22 "#address-cells":
27 All I3C devices are supposed to support DAA (Dynamic Address Assignment),
36 specific I3C dynamic address before the DAA takes place (so that other
37 devices on the bus can't take this dynamic address).
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/linux-6.12.1/arch/powerpc/kernel/
Dtau_6xx.c1 // SPDX-License-Identifier: GPL-2.0
8 * dynamic power management to limit peak CPU temp (using ICTC)
39 unsigned char high; member
46 * dynamic adjustment to minimize # of interrupts */
63 mtspr(SPRN_THRM2, THRM1_THRES(tau[cpu].high) | THRM1_V | maybe_tie); in set_thresholds()
78 tau[cpu].low -= step_size; in TAUupdate()
79 tau[cpu].high -= (step_size - window_expand); in TAUupdate()
88 if (tau[cpu].high <= 127 - step_size) { in TAUupdate()
89 tau[cpu].low += (step_size - window_expand); in TAUupdate()
90 tau[cpu].high += step_size; in TAUupdate()
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Dreloc_32.S1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Code to process dynamic relocations for PPC32.
8 * - Based on ppc64 code - reloc_64.S
13 /* Dynamic section table entry tags */
23 R_PPC_ADDR16_HA = 6 /* High Adjusted (S+A) */
37 lwz r11, (p_dyn - 0b)(r12)
38 add r11, r11, r12 /* runtime address of .dynamic section */
39 lwz r9, (p_rela - 0b)(r12)
41 lwz r10, (p_st - 0b)(r12)
43 lwz r13, (p_sym - 0b)(r12)
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/linux-6.12.1/Documentation/driver-api/thermal/
Dcpu-cooling-api.rst22 --------------------------------------------
30 "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
42 the name "thermal-cpufreq-%x" linking it with a device tree node, in
54 This interface function unregisters the "thermal-cpufreq-%x" cooling device.
62 CPUs. The current power is calculated as dynamic power (static power isn't
63 supported currently). This power model requires that the operating-points of
70 The dynamic power consumption of a processor depends on many factors.
73 - The time the processor spends running, consuming dynamic power, as
74 compared to the time in idle states where dynamic consumption is
76 - The voltage and frequency levels as a result of DVFS. The DVFS
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/linux-6.12.1/Documentation/devicetree/bindings/interrupt-controller/
Dsnps,archs-idu-intc.txt1 * ARC-HS Interrupt Distribution Unit
4 for dynamic IRQ routing, load balancing of common/external IRQs towards core
9 - compatible: "snps,archs-idu-intc"
10 - interrupt-controller: This is an interrupt controller.
11 - #interrupt-cells: Must be <1> or <2>.
18 - bits[3:0] trigger type and level flags
19 1 = low-to-high edge triggered
20 2 = NOT SUPPORTED (high-to-low edge triggered)
21 4 = active high level-sensitive <<< DEFAULT
22 8 = NOT SUPPORTED (active low level-sensitive)
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/linux-6.12.1/Documentation/devicetree/bindings/media/
Dmediatek,mdp3-hdr.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/media/mediatek,mdp3-hdr.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Matthias Brugger <matthias.bgg@gmail.com>
11 - Moudy Ho <moudy.ho@mediatek.com>
15 High Dynamic Range (HDR) to Standard Dynamic Range (SDR).
20 - mediatek,mt8195-mdp3-hdr
25 mediatek,gce-client-reg:
30 include/dt-bindings/gce/<chip>-gce.h of each chips.
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/linux-6.12.1/Documentation/ABI/testing/
Dsysfs-bus-i3c1 What: /sys/bus/i3c/devices/i3c-<bus-id>
3 Contact: linux-i3c@vger.kernel.org
5 An I3C bus. This directory will contain one sub-directory per
8 What: /sys/bus/i3c/devices/i3c-<bus-id>/current_master
10 Contact: linux-i3c@vger.kernel.org
12 Expose the master that owns the bus (<bus-id>-<master-pid>) at
17 What: /sys/bus/i3c/devices/i3c-<bus-id>/mode
19 Contact: linux-i3c@vger.kernel.org
21 I3C bus mode. Can be "pure", "mixed-fast" or "mixed-slow". See
25 What: /sys/bus/i3c/devices/i3c-<bus-id>/i3c_scl_frequency
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/linux-6.12.1/drivers/cpufreq/
Dpmac32-cpufreq.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org>
42 * init/main.c to make it non-init before enabling DEBUG_FREQ
51 * Currently, PowerMac cpufreq supports only high & low frequencies
121 /* tweak L2 for high voltage */ in cpu_750fx_cpu_speed()
255 * the above didn't re-enable the DEC */ in pmu_set_cpu_speed()
271 save_l3cr = _get_L3CR(); /* (returns -1 if not available) */ in pmu_set_cpu_speed()
272 save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ in pmu_set_cpu_speed()
300 switch_mmu_context(NULL, current->active_mm, NULL); in pmu_set_cpu_speed()
311 * as soon as interrupts are re-enabled and the generic in pmu_set_cpu_speed()
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/linux-6.12.1/tools/testing/selftests/drivers/net/mlxsw/
Dqos_ets_strict.sh2 # SPDX-License-Identifier: GPL-2.0
8 # them. In H3, we expect to see (almost) exclusively the high-priority traffic.
13 # +---------------------------+ +-----------------------------+
17 # | e-qos-map 0:1 | | | | e-qos-map 0:2 |
20 # +-----------------|---------+ +---------|-------------------+
22 # +-----------------|-------------------------------------|-------------------+
25 # | +---------------|-----------+ +----------|----------------+ |
29 # | +---------------|-----------+ +----------|----------------+ |
34 # | | ETS: (up n->tc n for n in 0..7) |
36 # +------------------------------------|--------------------------------------+
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/linux-6.12.1/tools/power/cpupower/bench/
DREADME-BENCH1 This is cpufreq-bench, a microbenchmark for the cpufreq framework.
7 - Identify worst case performance loss when doing dynamic frequency
9 - Identify average reaction time of a governor to CPU load changes
10 - (Stress) Testing whether a cpufreq low level driver or governor works
12 - Identify cpufreq related performance regressions between kernels
13 - Possibly Real time priority testing? -> what happens if there are
15 - ...
18 - Power saving related regressions (In fact as better the performance
21 - Real world (workloads)
27 cpufreq-bench helps to test the condition of a given cpufreq governor.
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/linux-6.12.1/Documentation/devicetree/bindings/sound/
Dcirrus,cs42l42.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - patches@opensource.cirrus.com
13 The CS42L42 is a low-power audio codec designed for portable applications.
14 It provides a high-dynamic range, stereo DAC for audio playback and a mono
15 high-dynamic-range ADC for audio capture. There is an integrated headset
21 - cirrus,cs42l42
22 - cirrus,cs42l83
29 VP-supply:
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Dawinic,aw87390.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Weidong Wang <wangweidong.a@awinic.com>
14 the musical output dynamic range, enhance the overall
15 sound quallity, which is a new high efficiency, low
19 - $ref: dai-common.yaml#
28 "#sound-dai-cells":
31 awinic,audio-channel:
40 - compatible
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Dti,pcm6240.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 # Copyright (C) 2022 - 2024 Texas Instruments Incorporated
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Shenghao Ding <shenghao-ding@ti.com>
24 https://www.ti.com/lit/gpn/pcm3120-q1
25 https://www.ti.com/lit/gpn/pcm3140-q1
26 https://www.ti.com/lit/gpn/pcm5120-q1
27 https://www.ti.com/lit/gpn/pcm6120-q1
28 https://www.ti.com/lit/gpn/pcm6260-q1
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/linux-6.12.1/include/linux/mfd/
Dac100.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2016 Chen-Yu Tsai
7 * Chen-Yu Tsai <wens@csie.org>
84 /* ADC digital audio processing (high pass filter & auto gain control */
91 #define AC100_ADC_DAP_L_H_A_C 0x86 /* Left High Avg. Coef */
93 #define AC100_ADC_DAP_R_H_A_C 0x88 /* Right High Avg. Coef */
100 #define AC100_ADC_DAP_L_H_N_A_C 0x8f /* Left High Noise Avg. Coef */
102 #define AC100_ADC_DAP_R_H_N_A_C 0x91 /* Right High Noise Avg. Coef */
104 #define AC100_ADC_DAP_H_HPF_C 0x93 /* High High-Pass-Filter Coef */
105 #define AC100_ADC_DAP_L_HPF_C 0x94 /* Low High-Pass-Filter Coef */
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/linux-6.12.1/tools/testing/selftests/gpio/
Dgpio-mockup.sh1 #!/bin/bash -efu
2 # SPDX-License-Identifier: GPL-2.0
7 #4: skip test - including run as non-root user
13 module="gpio-mockup"
29 echo "$0 [-frv] [-t type]"
30 echo "-f: full test (minimal set run by default)"
31 echo "-r: test random lines as well as fence posts"
32 echo "-t: interface type:"
33 echo " cdev (character device ABI) - default"
36 echo "-v: verbose progress reporting"
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/linux-6.12.1/Documentation/devicetree/bindings/display/samsung/
Dsamsung,exynos5-dp.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/display/samsung/samsung,exynos5-dp.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Inki Dae <inki.dae@samsung.com>
11 - Seung-Woo Kim <sw0312.kim@samsung.com>
12 - Kyungmin Park <kyungmin.park@samsung.com>
13 - Krzysztof Kozlowski <krzk@kernel.org>
17 const: samsung,exynos5-dp
25 clock-names:
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/linux-6.12.1/include/linux/platform_data/
Di2c-mux-gpio.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * i2c-mux-gpio interface to platform code
12 #define I2C_MUX_GPIO_NO_IDLE ((unsigned)-1)
15 * struct i2c_mux_gpio_platform_data - Platform-dependent data for i2c-mux-gpio
17 * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
18 * @values: Array of bitmasks of GPIO settings (low/high) for each
/linux-6.12.1/drivers/gpu/drm/amd/pm/powerplay/inc/
Dhardwaremanager.h93 …Caps_ExclusiveModeAlwaysHigh, /* In Exclusive (3D) mode always stay in High state. */
96 PHM_PlatformCaps_UVDAlwaysHigh, /* In UVD mode always stay in High state */
112 …PHM_PlatformCaps_DynamicACTiming, /* if the SMC dynamically re-programs MC S…
114 …tStateOnAlert, /* Go to boot state on alerts, e.g. on an AC->DC transition. */
115 …rVBlankOnAlert, /* Do NOT wait for VBLANK during an alert (e.g. AC->DC transition). */
143 …PHM_PlatformCaps_GFXDynamicMGPowerGating, /* Enable Dynamic MG PowerGating on Trinit…
148 …PHM_PlatformCaps_UVDDynamicPowerGating, /* enable UVD Dynamic power gating, suppor…
156 PHM_PlatformCaps_DynamicUVDState, /* Dynamic UVD State */
189 …MclkHigh, /* Disable memory clock switching by forcing memory clock high */
257 …((PHM_PlatformCaps_Max + ((PHM_MAX_NUM_CAPS_BITS_PER_FIELD) - 1)) / (PHM_MAX_NUM_CAPS_BITS_PER_FIE…
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/linux-6.12.1/drivers/usb/dwc2/
Dcore.h1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
3 * core.h - DesignWare HS OTG Controller common declarations
5 * Copyright (C) 2004-2013 Synopsys, Inc.
21 * - no_printk: Disable tracing
22 * - pr_info: Print this info to the console
23 * - trace_printk: Print this info to trace buffer (good for verbose logging)
32 dev_name(hsotg->dev), ##__VA_ARGS__)
37 dev_name(hsotg->dev), ##__VA_ARGS__)
42 /* dwc2-hsotg declarations */
74 * struct dwc2_hsotg_ep - driver endpoint definition.
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/linux-6.12.1/fs/netfs/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
7 helpers for high-level buffered I/O, abstracting out read
21 multi-CPU system these may be on cachelines that keep bouncing
26 bool "Enable dynamic debugging netfslib and FS-Cache"
56 multi-CPU system these may be on cachelines that keep bouncing
/linux-6.12.1/drivers/net/wireless/intel/iwlwifi/fw/api/
Drs.h1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * Copyright (C) 2012-2014, 2018-2022, 2024 Intel Corporation
12 * enum iwl_tlc_mng_cfg_flags - options for TLC config flags
36 * enum iwl_tlc_mng_cfg_cw - channel width options
52 * enum iwl_tlc_mng_cfg_chains - possible chains
62 * enum iwl_tlc_mng_cfg_mode - supported modes
82 * enum iwl_tlc_mng_ht_rates - HT/VHT/HE rates
120 * enum IWL_TLC_MCS_PER_BW - mcs index per BW
121 * @IWL_TLC_MCS_PER_BW_80: mcs for bw - 20Hhz, 40Hhz, 80Hhz
122 * @IWL_TLC_MCS_PER_BW_160: mcs for bw - 160Mhz
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/linux-6.12.1/Documentation/devicetree/bindings/regulator/
Dmicrochip,mcp16502.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MCP16502 - High-Performance PMIC
10 - Andrei Simion <andrei.simion@microchip.com>
15 requiring Dynamic Voltage Scaling (DVS) with the use
16 of High-Performance mode (HPM).
22 lpm-gpios:
25 Note that this GPIO must remain high during
26 suspend-to-ram, keeping the PMIC into HIBERNATE mode.
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/linux-6.12.1/Documentation/core-api/
Dswiotlb.rst1 .. SPDX-License-Identifier: GPL-2.0
19 These APIs use the device DMA attributes and kernel-wide settings to determine
30 ---------------
33 only provide 32-bit DMA addresses. By allocating bounce buffer memory below
40 directed to guest memory that is unencrypted. CoCo VMs set a kernel-wide option
54 IOMMU access control is per-granule, the untrusted device can gain access to
60 ------------------
85 ------------------------------
89 pre-allocated at boot time (but see Dynamic swiotlb below). Because swiotlb
93 The need to pre-allocate the default swiotlb pool creates a boot-time tradeoff.
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